package com.tool;

import java.util.Random;

import static java.util.Arrays.sort;

public class tool {

    public int gatRandomNumber(){
        Random random = new Random();
        return random.nextInt(10);
    }

    private void sort1(int[] arr){
        sort(arr);
    }

    protected void setNumber(){
        System.out.println(2);
    }
}
